CANNA(kan’a). When the tropical plants from which modern garden have been developed was taken to the United States in 1830, its large dark-green and bronze leaves were the most attractive part of it. The same thing was true of its early descendants, which were principally valued as foliage plants. After that time, however, plant breeders produced varieties with growing flowers of clear red, pink, yellow, or orange that is four times the size of the old-fashioned canna’s dark red ones. New varieties are raised from seed but in ordinary gardening, cannas are grown from roots, which must be dug up in the fall and stored for winter in cool cellars, as the cannas are tender to frost.
The stately canna is commonly grown in formal garden. The flowers are in clusters on stalks rising from the dark-green or bronze leaves.
Some species and many cultivars are widely grown in the garden in temperate and sub-tropical regions. Sometimes, they are also grown as potted plants. A large number of ornamental cultivar have been developed. They can be used in herbaceous borders, tropical plantings, and as a patio or decking plant.
Internationally, cannas are one of the most popular garden plants and a large horticultural industry depends on the plant.